diff --git a/packages/account-tree-controller/src/AccountTreeController.ts b/packages/account-tree-controller/src/AccountTreeController.ts
index 1537a6bb412..dd51a39bc32 100644
--- a/packages/account-tree-controller/src/AccountTreeController.ts
+++ b/packages/account-tree-controller/src/AccountTreeController.ts
@@ -5,13 +5,15 @@ import type {
   AccountGroupType,
   AccountSelector,
   MultichainAccountWalletId,
+  MultichainAccountGroup,
+  Bip44Account,
 } from '@metamask/account-api';
 import type { MultichainAccountWalletStatus } from '@metamask/account-api';
 import { type AccountId } from '@metamask/accounts-controller';
 import type { StateMetadata } from '@metamask/base-controller';
 import { BaseController } from '@metamask/base-controller';
 import type { TraceCallback } from '@metamask/controller-utils';
-import { isEvmAccountType } from '@metamask/keyring-api';
+import { isEvmAccountType, KeyringAccount } from '@metamask/keyring-api';
 import type { InternalAccount } from '@metamask/keyring-internal-api';
 
 import type { BackupAndSyncEmitAnalyticsEventParams } from './backup-and-sync/analytics';
@@ -223,6 +225,20 @@ export class AccountTreeController extends BaseController<
       },
     );
 
+    this.messagingSystem.subscribe(
+      'MultichainAccountService:multichainAccountGroupCreated',
+      (group) => {
+        this.#handleMultichainAccountGroupCreatedOrUpdated(group);
+      },
+    );
+
+    this.messagingSystem.subscribe(
+      'MultichainAccountService:multichainAccountGroupUpdated',
+      (group) => {
+        this.#handleMultichainAccountGroupCreatedOrUpdated(group);
+      },
+    );
+
     this.#registerMessageHandlers();
   }
 
@@ -616,6 +632,18 @@ export class AccountTreeController extends BaseController<
     }
   }
 
+  /**
+   * Handles multichain account group created/updated event from
+   * the MultichainAccountService.
+   *
+   * @param group - Multichain account group being that got created or updated.
+   */
+  #handleMultichainAccountGroupCreatedOrUpdated(
+    group: MultichainAccountGroup<Bip44Account<KeyringAccount>>,
+  ): void {
+    this.#backupAndSyncService.enqueueSingleGroupSync(group.id);
+  }
+
   /**
    * Helper method to prune a group if it holds no accounts and additionally
    * prune the wallet if it holds no groups. This action should take place
@@ -705,11 +733,6 @@ export class AccountTreeController extends BaseController<
 
       // Map group ID to its containing wallet ID for efficient direct access
       this.#groupIdToWalletId.set(groupId, walletId);
-
-      // Trigger atomic sync for new group (only for entropy wallets)
-      if (wallet.type === AccountWalletType.Entropy) {
-        this.#backupAndSyncService.enqueueSingleGroupSync(groupId);
-      }
     } else {
       group.accounts.push(account.id);
     }
diff --git a/packages/account-tree-controller/src/types.ts b/packages/account-tree-controller/src/types.ts
index 231a3de226d..8527ad80092 100644
--- a/packages/account-tree-controller/src/types.ts
+++ b/packages/account-tree-controller/src/types.ts
@@ -38,7 +38,12 @@ import type {
   AccountWalletObject,
   AccountTreeWalletPersistedMetadata,
 } from './wallet';
-import type { MultichainAccountServiceWalletStatusChangeEvent } from '../../multichain-account-service/src/types';
+import type {
+  MultichainAccountServiceGetMultichainAccountWalletsAction,
+  MultichainAccountServiceMultichainAccountGroupCreatedEvent,
+  MultichainAccountServiceMultichainAccountGroupUpdatedEvent,
+  MultichainAccountServiceWalletStatusChangeEvent,
+} from '../../multichain-account-service/src/types';
 
 // Backward compatibility aliases using indexed access types
 /**
@@ -126,6 +131,7 @@ export type AllowedActions =
   | UserStorageController.UserStorageControllerPerformSetStorage
   | UserStorageController.UserStorageControllerPerformBatchSetStorage
   | AuthenticationController.AuthenticationControllerGetSessionProfile
+  | MultichainAccountServiceGetMultichainAccountWalletsAction
   | MultichainAccountServiceCreateMultichainAccountGroupAction;
 
 export type AccountTreeControllerActions =
@@ -166,6 +172,8 @@ export type AllowedEvents =
   | AccountsControllerAccountRemovedEvent
   | AccountsControllerSelectedAccountChangeEvent
   | UserStorageController.UserStorageControllerStateChangeEvent
+  | MultichainAccountServiceMultichainAccountGroupCreatedEvent
+  | MultichainAccountServiceMultichainAccountGroupUpdatedEvent
   | MultichainAccountServiceWalletStatusChangeEvent;
 
 export type AccountTreeControllerEvents =